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Finding the Fourth Proportional to 131,713.72, 181,644.18 and 88,030

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Solution

The fourth proportional to 131,713.72, 181,644.18 and 88,030 is: 121,400.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,713.72 : 181,644.18 = 88,030 : x
  2. Step 2: Convert to fraction form
    131,713.72/181,644.18 = 88,030/x
  3. Step 3: Cross multiply
    131,713.72x = 181,644.18 × 88,030
  4. Step 4: Simplify right side
    131,713.72x = 15,990,137,165.40
  5. Step 5: Solve for x
    x = 15,990,137,165.40/131,713.72
  6. Step 6: Final answer
    x = 121,400.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.